public class Example3_7{
  public static void main (String args[]){
    int sum=0,i,j;
    for (i=1;i<=10;i++){
      if(i%2==0){
        continue;}
         sum=sum+i;}
       System.out.println("sum="+sum);
       for(j=2;j<=5217;j++){
       for(i=2;i<=j/2;i++){
       if(j%i==0)
               break;
         }
        if(i>j/2){
         System.out.println(""+j+"是素数");
}}}}
